SU911028A1 - Working member of mining cutter-loader - Google Patents

Description

(54) THE EXECUTIVE BODY OF THE MOUNTAIN COMBINE

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The invention relates to the mining industry, and specifically to devices for mechanized mining of minerals or for mining operations, provided with means of protection against methane explosions during a friction spark.

Known executive body of a mining combine, including a cutting head with teeth, mounted on the drive shaft 1.

The disadvantages of such executive bodies should be attributed to their lack of explosives, which makes it difficult to use mining combines equipped with such executive bodies in explosive conditions.

Also known is the executive body of the mining combine, which includes a cutting head with teeth, mounted on the drive shaft, and explosion suppressing devices mounted on the body of the combine and electrically

associated with photosensitive elements housed in a 1.2 detector chamber.

The disadvantages of this executive body include the fact that the work of the mining combine is accompanied by considerable dust formation in the bottomhole space j- which makes it difficult for the photosensitive elements of the methane flashes generated by the friction spark on the teeth of the cutting tool to be registered in time. As a result, the effectiveness of explosion suppression is significantly reduced.

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In addition, for the executive bodies of tunneling machines that process the face at the same time throughout the entire output section, flash registration is possible only with a significant spread of the flame, since photosensitive elements, as a rule, can be placed only on

Claims (2)

in the body of the combine. 391 Moreover, the design and location of the executive bodies of modern excavation and tunneling machines, as well as the limited size of the bottomhole space, in most cases exclude the possibility of placing photosensitive elements on the body of the combine The purpose of the invention is to increase the explosion hazard of the combine, the goal is achieved so that the cutting head and drive shaft are made through channels, the inlet openings of which are located near each insert in the cutting head, and the outlet opening is at one shaft, and snabkeny rigidly fixed in the channels 4 and cvetovoda gikimi fiber having input and output ends, the input ends of the light guides are fixed in openings input channels and the output withdrawn through outlets in the detector chamber. In addition, each inlet has a translucent translucent screen made of glass, mounted in the venthole, flush with the surface of the head and rigidly connected to the inlet end of the cBfe of the product. FIG. 1 shows a schematic view of the use of the organ of the tunneling machine, general view; on "fwr. 2 - partial cut of the relium of the head; FIG. 3 schematically shows a screw actuator, o &n; in fig. C - partial screw cut. The executive body 1 of the mining harvester ssdermmit is mounted on the cutting head teeth 2 and through channels 3, made according to the number of cutting teeth. In the holes of the through channels 3, which are located on the surface of the cutting head 2, are flush with it, transparent protective shields k, made, for example, of glass, are fixed (glued with epoxy glue). About through channels 3 fiber-optic fibers 5 are flexible in such a way that the ends of their input ends touch the surface of the transparent protective screens f. In this case, the lateral surface of the input ends is rigidly fixed on (for example, epoxy glue) with the walls of the channels 3. Upon leaving the channels 3, the flexible optical fibers are assembled and a common bundle 6 is passed through the channel of the drive shaft 7 of the executive body of the mining combine. The output end 8 of the bundle of light guides 6 is inserted into the light-tight chamber 9 of the flame detector, mounted on the support bearing holder of the free end of the shaft 7 of the executive body of the combine. Photoelectric sensing elements 10, electrically connected to explosive suppressors 11 installed on the combine, are placed in the opaque chamber 9. The explosive suppressing device 11 contains a container with an ingi (backing device and pyrotechnic charge). When an outburst of the cutting combine 2 of the mining combine executive body appears, it accompanies light radiation, according to an individual optical fiber, enters the light-tight chamber 9 with photoelectric sensitive elements 10. The converted signal from the photo cells 10 triggers the explosive suppressing device 11. The gases forming the device 11 when the pyrotechnic charge burns, spray the inhibitor and get it into the flash area to any of the cutting member 2 of the executive body. This invention makes it possible to more effectively suppress the methane outbursts that occur in Bottomhole space when working mining combines. Claim t. The executive body of a mining combine, including a cutting head with teeth, mounted on the drive shaft, and explosion suppressing devices, mounted on the body of the combine and electrically connected with photosensitive elements housed in the detector chamber, characterized in that, in order to increase the explosion safety of the combine, the cutting head and the drive shaft are made with through channels whose inlets are located near each insert in the cutting head, and the outlet is in the drive shaft, and is equipped with flexible fiber optic fibers rigidly fixed in the channels, having input and output ends, while the input ends of the lights are fixed in the inlets of the channels, and the outlets are led out through the outlet to the chamber of the tector. 2. The organ of pop. 1 is also distinguished by the fact that each inlet has a transparent shield, made of a sieve, installed in the inlet ef fff. They are flush with the surface of the head and rigidly connected with the input end of the fiber. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 323552, cl. E 21 C 35/00, 1970,, 2. Patent of Great Britain (7S, class, E 21 C 35/00, published, E7 (prototype). / Vd fug, j sixteen FIG. 8 9 10 ff I